The Visio MVP group recently added a new member. Jesse Phillips-Mead was added to the team based on his recent work building BI dashboards in SharePoint using Visio Services. I encourage you to follow him via his blog to learn how he has leveraged...

The Visio team posted a new article that outlines the process for creating an Icon Set style Data Graphic which shows 5 different flags http://blogs.office.com/2014/06/30/creating-custom-data-graphics-in-visio/